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Swiss CO2-monitor using Icon64

ThingPulse Swiss CO2-monitor in a classroom

Using our Icon64 acoustic LED device we built a truly Swiss CO2-monitor by integrating a Sensirion SCD4x CO2 sensor – designed, engineered and built in Switzerland.

The SDC4x offers an unmatched price-to-performance ratio despite coming from a country with very high living and production costs. Furthermore, it more than breaks the size barrier in CO2 sensing. A CO2 sensor of such precision and accuracy in a <1cm3 package is unheard of.

We built the Icon64 with extensibility in mind from the very beginning. This allows us to react quickly to specific customer requirements. The Swiss C02-monitor is a result of this.

The Icon64 CO2-monitor is perfect for your classroom, living room, and (home-)office.

A student asked me yesterday: how did we manage to survive so far without?

Primary school teacher after introducing the Swiss CO2-monitor

With 27 students it takes about 15min until it blinks red. Opening the windows for five minutes brings the level down to 500ppm and everybody continues to work with peace of mind.

1st grade teacher

5 thoughts on “Swiss CO2-monitor using Icon64

  1. Great product, I’d like to buy one, but I can’t see how to, could not see an option in your shop?

    1. Sorry David, we are selling the device in that specific configuration to Swiss schools directly. To build one for yourself you’d have to buy a stock Icon64 from us plus an SCD4x. If you add 90° pin headers you can even wire it in with jumper cables. The software currently supports either the MH-Z19 or the SCD4x: https://github.com/ThingPulse/esp32-icon64-co2/blob/master/src/main.cpp#L19. For the Sensirion sensor you may use SDA 18 & SCL 19 as per https://github.com/ThingPulse/esp32-icon64-co2/blob/master/src/co2_scd4x.h#L6 or any other available pins.

  2. Will the SDC40 or SDC41 be available in you shop?

    1. Thanks for asking but we haven’t made up our mind yet. It’s rather unlikely we’ll be selling the SMD version for reflow soldering. If it’s economically feasible we might consider offering their SEK-SCD41 dev kit, though.

      1. Ok, a dev kit actually makes even more sense. I didn’t see there is one available. Mouser sells them for a quite reasonable price.

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